CODEWITHSUNDEEP
c#winforms
Ciaran
Ciaran

Reputation: 35

Close form currently in focus

I was wondering how you would close the Form that is currently in focus or the one which a control is contained in. For example, I have an imported header with a menu that I import into all forms in my application.

This is the (simplified) code in my Header class:

public static Panel GetHeader()
{
    ...
    menuItem.Text = "Menu Item";
    menuItem.Name = "Next form to open";
    menuItem.Click += toolStrip_Click;
    ...
}

public static void toolStrip_Click(object sender, EventArgs e)
{
    ToolStripMenuItem menuItem = sender as ToolStripMenuItem;
    NavigationClass.SaveNextForm(menuItem.Name);
}

The navigation class is just something I made which will select the next form to open but I couldn't find anything to then close the current one (since Close() isn't an option due to it being imported with Controls.Add(HeaderClass.GetHeader))

Edit

Just to make clear, this form is in another file which is just a normal class file. That's where the difficulty lies because I'm trying to avoid a severe violation of the DRY principle

Upvotes: 0

Views: 75

Answers (1)

Tolga Evcimen
Tolga Evcimen

Reputation: 7352

Don't use static handlers as @Hans Passant suggests. That is important.

Try sending your main form to your class as a parameter, and store it in that class. This can be done either when you are instantiating your class, or after that. Then, when you need to close the form, call it's Close method. Since you don't include your codes in more details, here is my example with some assumptions.

public class MainForm : Form
{
    private HeaderClass HeaderClass;
    public MainForm()
    {
        HeaderClass = new HeaderClass(this);
    }
}

public class HeaderClass
{
    private MainForm MainForm;
    public HeaderClass(MainForm mainForm)
    {
        MainForm = mainForm;
    }

    public void MethodThatYouNeedToCloseTheFormFrom()
    {
        ...
        MainForm.Close();
        ...
    }
}

Let us know if you require any more elaboration.

Upvotes: 1

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